Cassette for x-ray films



M. B. HODGSON.

CASSETTE FOR X-RAY FILMS.

APPLICATION FILED MAY 6. 19:8.

1,367,601. Panma Feb, 8, 1921.,

mvg/rivers elk MI'LIIARD B. HUDGSO, OF RDCHESTER, NEW YRK.

CASSETTE FOR X-RAY FELMS.

Speceation of Letters Patent.

Patented Feb. 8, 1921.

Application filed May 6, 1918. Serial No. 232,961.

To all whom it lmag/ concern Be it known that l, Mitteln) B. llonosoN, a citizen of the United States of America, residing at Rochester', in the county ot' Monroe and State of New vYork, have in- Vented certain new and useful lmprovements in Cassettes for .l-Ray Films, of which the following is a full, clear, and exact specification.

My invention relates to holders or cassettes for X-ray plates or ilms. vlt is my object to produce a sim ple and cheaply made cassette which is easy to use and into which a ilm may be placed'without buckling or bending. It will be apparent from an inspection of the description herein contained and the claims appended hereto wherein the novelty resides and what the advantages of this cassette are.

Reference is made to the accoinpanyinglr drawings in which:

Figure 1 is a perspective view ot one embodiment of my invention;

Fig. 2 is a plan view of a portion of a second embodiment;

Fig. 3 is a longitudinal section oi the cassette as in use, and

Fig. l is a fragmentary view showing the particular catch used to hold the cassette closed.

Referring now in detail to the drawing, in which like reference characters are used to represent like parts in all ligures, the cassette comprises two leaves, one of which 1 serves as a cover and the other 2 as a hack. These are joined by any 'form ot" hinge as, for instance7 the ilexihle connec- .tion 3. These leaves are made ot cardboard .and are opaque to light rays but are uni tornily pervious to "2i-rays. lt is important that the composition should he very uni form, so that the Xiays may passthrough all portions with equal ease to avoid met tling the lilm rcontained within. l desired, they may be waterproofed.

Upon the hack 2 is attached hy an adhe sive an envelop 'which consists ci a rectan- ,cular sheet 4 having' intexral therewith the flaps 5, 6. 7 and 8. The tlaps are connected by the light seals 9 atjhe'cerners `between them, so that when folded it will be ini-nos sible for light to enter the en volop at these corners. The end Hap 5 and the lsid-e tlaps 6 and 7 are relatively narrow. the tlap nearest the hinged end oi the 'nach is made longer than the other and dts down upon the sheet 4.. so as to lill in the space between the other llaps, the narrow flaps may then be folded over this cover lap and the. envelop is then light-tight. lt is apparent that the envelop flaps, light seals and cover are made from one piece folded in a simple way. They are made ot strong paper which is impervious to light raysbut uniformly pervious to X-rays and may be waterproofed to prevent any deleterious action upon the film Jfrom any pigment or other material in the paper ci' the envelop.

l also contemplate making the cover of a separate piece from the other parts of the.

envelop. This is shown in Fig. 2 in which the lla p 'l2 adjacent the hinge is also maade narrow and the separate cover piece 13 tting the sheet 4: may be placed within theenvclop and all the llaps folded down upon it. X-ray films usually come in packages in which films and sheets of opaque paper are packed alternately, and it is my inten tion that the user will take a film from such. a package and in Vusing;r the form shown in Fig. 2 will place it upon the sheet and then place over it the opaque piece ot paper that accompanies it, usingr it as the cover 13.

ln order' to hold the cassette tightly closed l employ any desired form oi catch or fastener, such as the fastener 1l which is pivoted to the hack and the channel part of which holds the cover and hack tightly together. 1

ln use an .l-ray iilm l0 is placed in the envelop, the cover 8 or 13 placed thereover and the flaps turned down over the cover. The cover il is closed lovei envelop and secured in place hy the catches il. This is done in a dark room. The cassettes each holding a film are taken into the operating room and the entire cassette placed in the exposure position subject to impression by lli-rays in the usual manner. l iind this form ,of envelop advantageous in that the iilms which are frequently of large dimension may he placed therein without sliding, as would he necessary in some olf-the envelope now in use which are open at one end and into which films must be slid edgewise. This is frequently accompanied by buckling ot the film and scratching ot the emulsion thereon.

Having thus des'rihed my invention, what claim and desire to secure oy Letters Patents ot the United States, is i l. e. cassette tor Xfray platee, comprising We leaves, one serving es e eove` and the other as a back, flaps attached to the beck and surrounding an area into which en -ray plate may be placed end over which y the eps may be folded.

2. A cassette for X-rey lms eomplieing two leaves, Sepe attached to one leaf enel surrounding an aree. into whiell an-X-my film may be' placed, there being provided e cover to be pleeed over such e lm.

3. A cassette for Xq'ey films, comprising 'twoleaves hingedly eolmeeted, flaps at- -tachecl to one leall and surrounding en area l into which an X-rey llm may be placed,

there being provided e Covent to be placed over suchv e. fxlm, light seele loetween the flaps, and means to held theleeves together.

4. A., cassette fot' l5' eej; lms, eemprieng two leevee, one serving ee e cover and. the

other es e heele, epe attache@ to the 'beek and forming em'moeure, of

being' sheped telit between. the other lepe and fill the inclosure, and the other epe being narrow, so that en .l-rey `film may be `lplaced within the inelosule, the first met;-

ftioneel -lep folded down thereove' as e cove;w Aarl-rl the narrow eps olcled over it.

cassette for X-x'ey lms, eompeng two leaves hngedly connected et one edge and an envelop between the leaves, the en- '50 velop comprsirlg e sheet attached to one leef and having leps et its edges adapted to be folded over the sheet and light seele between the laps, one of the eps beine; shaped to lit' between the other tlepe to eovel' the sheet, and theothe flaps being narrow enel adapted to fold over." the re't nell/led the material. of the'leeves and Q weterprooFl and mpevioes tol j. and pervous to Xweye, and for hold ing the leaves togethex.

l 6. A cassette for X-rey'pletee,eomp two leaves, one .serving cove? me, other es ve beek, fle-pe etteelletl te lme end surrounding en wlmelx le-my plete melf; loe placed enel ev the flaps may be ocletl,"ell mede 'of materiel lmpevoee to end pervioueto X-xeys, enel et the elemente keine; wete Sgnegl et uoeheetel, .Mew dey ofilfey, .l-Elf. 

